Dissertation Research: Effects of Habitat Modification on Arthropod Community Structure and Food Web Dynamics in an Agroecosystem

论文研究：生境改造对农业生态系统中节肢动物群落结构和食物网动态的影响

• 批准号: 9412256
• 负责人: Daniel Doak
• 金额: $ 0.5万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-15 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9412256&HistoricalAwards=false
• 关键词: Dissertation; Research; Effects; Habitat; Modification

9412256 Doak This study examines the effects of habitat heterogeneity, spatial variability, and generalist predators on the structure of the arthropod communty on rice plants in the Sacramento Valley, California. The research employs large-scale manipulations (winter flooded vs. unflooded and organically managed vs. conventionally managed) and small-scale field experiments to assess the importance of particular species interactions in determining community structure. Path analysis will allow generation and testing of predictions about directions and strengths of interactions. This research will improve our understanding of the factors that control the structure of arthropod communities. The results of this study will have direct application to agriculture, especially in assessing the advantages and disadvanteges of organic farming practices and in rice pest control.

9412256 DOAK这项研究考察了栖息地异质性、空间变异性和多面手捕食者对加州萨克拉门托山谷水稻节肢动物群落结构的影响。这项研究采用了大规模的操作(冬季洪水与非洪水以及有机管理与常规管理)和小规模的野外实验来评估特定物种的相互作用在确定群落结构中的重要性。路径分析将允许生成和测试关于相互作用的方向和强度的预测。这项研究将加深我们对节肢动物群落结构控制因素的理解。这项研究的结果将直接应用于农业，特别是在评估有机耕作措施的利弊和水稻病虫害防治方面。